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[Swift5] 画像の色を変更する

Last updated at Posted at 2019-10-17

やりたいこと

changeColor.png
この黒い電球を...
スクリーンショット 2019-10-17 14.56.35.png スクリーンショット 2019-10-17 14.55.59.png

こんな感じに色を変えたい!!

やり方

コードなし

1.Assets.xcassetsを開き、画像を選択する
スクリーンショット 2021-05-27 14.02.02.png

2.attribute inspectorのRender Asを[default -> Template Image] に変更する
スクリーンショット 2021-05-27 14.04.43.png

3.Storyboard上でimageViewのTint Colorを好きな色に変更する
スクリーンショット 2021-05-27 14.07.49.png

コードで実装

import UIKit

class ViewController: UIViewController {
    
    // imageのRenderingModeをalwaysTemplateに変更
    let image: UIImage = (UIImage(named: "light")!.withRenderingMode(.alwaysTemplate))
    let imageView: UIImageView = UIImageView()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        
        // 画像の大きさと位置を調整
        let screenWidth: CGFloat = view.frame.size.width
        let screenHeight: CGFloat = view.frame.size.height
        let imgWidth: CGFloat = image.size.width
        let imgHeight: CGFloat = image.size.height
        let scale: CGFloat = screenWidth / imgWidth
        let rect: CGRect = CGRect(x: 0, y: 0,
                                  width: imgWidth * scale,
                                  height: imgHeight * scale)
        imageView.frame = rect
        imageView.center = CGPoint(x: screenWidth / 2, y: screenHeight / 2)
        
        // imageViewにimageを代入
        self.imageView.image = self.image
        // imageViewのtintColorを好きな色に変更
        self.imageView.tintColor = .orange
        // imageViewを表示
        self.view.addSubview(self.imageView)
    }
}

備考

記載内容を2021年仕様に更新しました。

参考記事

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